Circuit board cufflink



FIG. 1 is a top perspective view of a circuit board cufflink showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front side elevational view thereof, the rear side elevational view being a mirror image thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof, with the second cufflink in the pair shown in broken lines; and,

FIG. 8 is a perspective view of a cufflink shown in a used condition.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a circuit board cufflink, as shown and described. 